Without color; lacking characteristics which give variety. blank (Adjective). Free from writing, printing, or marks; having an empty space to be filled in; as, blank paper; a blank check; a blank ballot. blank (Adjective). Without expression.
Yes they do damage hair. Every time I have tried one ,I wound up looking like a Q-tip or my head looked like cotton. A perm will damage even more and look worse if you have been coloring your hair. There's chance of it looking okay if you don't color your hair.
Tips. 1  Although new hair growth will be a factor after a couple of months, perms can last for up to six months with gentle care and treatment. 2  To make a perm last longer, avoid heat styling as much as possible. 3  Use a hair-dryer diffuser to help retain the curl of the perm and soften the damage of heat styling.